Navigation system



FIG. 1 is a front and right side perspective view of a navigation system showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a rear elevation view thereof;

FIG. 8 is a sectional view thereof taken along line 8-8 of FIG. 2, and not showing inside components; and,

FIG. 9 is an enlarged front elevation view illustrating an illuminated panel of the navigation system in an in use state.

The portions indicated in broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a navigation system, as shown and described. 